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Old Aug 12, 2007, 5:19 PM   #1
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I recently purchased a Panasonic SDR H200 camcorder. It allows recording of video on the camera hard drive or on a SD Memory Card. I want to purchase a 2GB or 4GB SD card. The manual recommends that for video recording I use an SD card with aClass 2 or higher SD speed class rating.

What exactly is a Class 2or higher speed class rating foran SD card?Why won't a regular SD card work for video recording?
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Old Aug 12, 2007, 7:48 PM   #2
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'Class 2' means: "A speed of 2 MB/s or higher is guaranteed at the best fragmented state where no memory unit is occupied." (See http://www.sdcard.com/usa/TextPage.asp?Page=3)

That is, an empty, freshly formatted card that can keep up with a streamof data from thehost device of 2 megabytes per second, is a 'Class 2' card. If the card contains other files, or if the memory is otherwise fragmented, the card shouldn't be expected to keep up.

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